(57) The invention concerns a prefabricated joist for floors or lintels (1; 10), comprising
a plurality of substantially U-shaped brick bases (2; 20) that define a channel (3)
in which iron bars belonging to a framework or additional iron bars are positioned
and which is to be filled with concrete. Said joist is provided with a plurality of
U-bolts (5), each one having its ends (51, 52) buried in the bottom (23) of said brick
base, said U-bolts being spaced at regular intervals and aligned with one another
in such a way as to define at least one rectilinear support for at least one additional
iron bar (5, 6, 7) spaced from the bottom surface (23) of said brick base, said iron
bar remaining inside the outline defined by the channel of the brick bases filled
with concrete.
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